Katie Couric has been advocating for cancer screening and awareness for decades, since her husband died of colon cancer. John Lamparski/Getty Images Katie Couric has advocated for colon cancer awareness since her husband died of the disease in 1998. She said it's more important than ever to know your risk, as colon cancer is on the rise in young people. Couric said she sticks to a simple diet, exercise, and screening tips to help prevent cancer. In the 1990s, colon cancer was considered a p...